Near infrared reflectance spectroscopy for the determination of free gossypol in cottonseed meal

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dc.contributor.author Lordelo, MM en
dc.contributor.author Shaaban, SA en
dc.contributor.author Dale, NM en
dc.contributor.author Calhoun, MC en
dc.contributor.author Vendrel, PF en
dc.contributor.author Davis, AJ en
dc.date.accessioned 2014-06-06T06:48:11Z
dc.date.available 2014-06-06T06:48:11Z
dc.date.issued 2008 en
dc.identifier.issn 10566171 en
dc.identifier.uri http://dx.doi.org/10.3382/japr.2007-00078 en
dc.subject Cottonseed meal en
dc.subject Gossypol en
dc.subject Near infrared reflectance spectroscopy en
dc.subject.other Gossypium hirsutum en
dc.subject.other Micropus en
dc.title Near infrared reflectance spectroscopy for the determination of free gossypol in cottonseed meal en
heal.type journalArticle en
heal.identifier.primary 10.3382/japr.2007-00078 en
heal.publicationDate 2008 en
heal.abstract Gossypol is a toxic polyphenolic compound produced by the pigment glands of the cotton plant. The free gossypol content of cottonseed meal (CSM) is commonly determined by the American Oil Chemists' Society (AOCS) wet chemistry method. The AOCS method, however, is laboratory-intensive, time-consuming, and therefore, not practical for quick field analyses. To determine if the free gossypol content of CSM could be predicted by near infrared reflectance spectroscopy (NIRS), CSM samples were collected from all over the world. All CSM samples were ground and a portion of each analyzed for free gossypol by the AOCS procedure (reference data) and by NIRS (reflectance data). Both reflectance and reference data were combined in a calibration. The coefficient of determination (r 2) and standard error of prediction (SEP) were used to assess the calibration accuracy. The r 2 was 0.728, and the SEP was 0.034 for the initial calibration that included samples from all over the world. However, the r 2 and SEP improved to 0.921 and 0.014, respectively, if the calibration was made using CSM samples only from the United States. These results indicate that a general prediction equation can be developed to predict the free gossypol content of CSM by NIRS. From a practical standpoint, NIRS technology provides a method for quickly assessing whether a particular batch of CSM has a free gossypol content low enough to be suitable for use in poultry diets. ©2008 Poultry Science Association, Inc. en
heal.journalName Journal of Applied Poultry Research en
dc.identifier.issue 2 en
dc.identifier.volume 17 en
dc.identifier.doi 10.3382/japr.2007-00078 en
dc.identifier.spage 243 en
dc.identifier.epage 248 en

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